Handle stack spills in ARM integrated assembler.

src/IceInstARM32.cpp

 //===- subzero/src/IceInstARM32.cpp - ARM32 instruction implementation ----===//
 //
 //                        The Subzero Code Generator
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 ///
 /// \file
@@ skipping 605 matching lines @@
   Operand *Src0 = getSrc(0);
   // Note: Loop is used so that we can short circuit using break.
   do {
     if (Dest->hasReg()) {
       Type DestTy = Dest->getType();
       const bool DestIsVector = isVectorType(DestTy);
       const bool DestIsScalarFP = isScalarFloatingType(DestTy);
       const bool CoreVFPMove = isMoveBetweenCoreAndVFPRegisters(Dest, Src0);
       if (DestIsVector || DestIsScalarFP || CoreVFPMove)
         break;
-      Asm->mov(Dest, Src0, getPredicate());
+      if (isMemoryAccess(Src0)) {
+        // TODO(kschimpf) Figure out how to do ldr on CoreVPFMove? (see
+        // emitSingleDestSingleSource, local variable LoadOpcode).
+        Asm->ldr(Dest, Src0, getPredicate());
+      } else {
+        Asm->mov(Dest, Src0, getPredicate());
+      }
+      return;
+    } else {
+      Type Src0Type = Src0->getType();
+      const bool Src0IsVector = isVectorType(Src0Type);
+      const bool Src0IsScalarFP = isScalarFloatingType(Src0Type);
+      const bool CoreVFPMove = isMoveBetweenCoreAndVFPRegisters(Dest, Src0);
+      if (Src0IsVector || Src0IsScalarFP || CoreVFPMove)
+        break;
+      Asm->str(Src0, Dest, getPredicate());
       return;
     }
   } while (0);
   llvm_unreachable("not yet implemented");
 }
 
 void InstARM32Mov::emit(const Cfg *Func) const {
   if (!BuildDefs::dump())
     return;
   assert(!(isMultiDest() && isMultiSource()) && "Invalid vmov type.");
@@ skipping 816 matching lines @@
 template class InstARM32ThreeAddrGPR<InstARM32::Sbc>;
 template class InstARM32ThreeAddrGPR<InstARM32::Sdiv>;
 template class InstARM32ThreeAddrGPR<InstARM32::Sub>;
 template class InstARM32ThreeAddrGPR<InstARM32::Udiv>;
 template class InstARM32ThreeAddrFP<InstARM32::Vadd>;
 template class InstARM32ThreeAddrFP<InstARM32::Vdiv>;
 template class InstARM32ThreeAddrFP<InstARM32::Vmul>;
 template class InstARM32ThreeAddrFP<InstARM32::Vsub>;
 
 } // end of namespace Ice